Aaron Cash recently returned to Island Dance to work with students. He taught class and created dance pieces for company dancers and alumnae over the weekend after touring for 10 years on Cher’s “Love Hurts” tour. He has danced with Mikhail Baryshnikov and with Twyla Tharp as her pas de deux partner. Cash has worked with the theatre’s dance students for four years. “It amazes me what really good training there is here,” he said of the dance studio. “They [the students] always seem to love what they do.”